Purina Tidy Cats Lightweight Glade Tough Odor Solutions Clear Springs Clumping Dust Free Litters 100% dust-free formula helps you minimize messes to keep it TIDY Glade Tough Odor Solutions technology fights strong smells Half the weight of leading clumping litter and forms strong, tight clumps for easy cleanup Ammonia Blocker prevents ammonia odor from forming for at least two weeks when used as directed Locks in moisture to keep cats dry and comfortable